Cancel culture truly sucks. I find your videos educational and fun. I'm wondering why you are being so targeted while other very popular channels with the same content are not.
It's likely not a human that took it down, but the algorithm itself. Perhaps you can appeal these video removals. It will be wonderful once YT gets real competition. Viable competition that doesn't censor. Maybe something decentralized on a blockchain might be the answer.
You have to differentiate between 'It appears in my notification feed' 'It appears late in my notification feed' and 'no notification sign on the bell unless you open it'. Any live event that I set a reminder for, I get a notification maybe half an hour late if at all. Especially with arms content even subscriptions change or disappear.